$ cpan YAML-0.71
CPAN: Storable loaded ok (v2.18)
Going to read /Users/Erika/.cpan/Metadata
  Database was generated on Thu, 03 Jun 2010 11:27:12 GMT
Warning: Cannot install YAML-0.71, don't know what it is.
Try the command

    i /YAML-0.71/

to find objects with matching identifiers.
CPAN: Time::HiRes loaded ok (v1.9711)
econ2-231-74-dhcp:~ Erika$ i/YAML-0.71
-bash: i/YAML-0.71: No such file or directory
econ2-231-74-dhcp:~ Erika$ i /YAML-0.71/
-bash: i: command not found